[Campbell Biology P.919] Which of the following plant hormones is correctly matched with its... | Practice Question

Which of the following plant hormones is correctly matched with its major response?

  • A: Cytokinins: Promote stem elongation
  • B: Jasmonates: Regulate apical dominance
  • C: Abscisic acid (ABA): Promotes stomatal closure in response to drought
  • D: Brassinosteroids: Mediate plant defenses against insect herbivores

Explanation

Based on the 'Major Responses' column in the 'Plant Hormone' table on page 846, Abscisic acid ABA is listed as 'Promotes stomatal closure in response to drought; promotes seed dormancy.' The other options incorrectly match the hormone to the response.